WO1989004244A1 - Method and apparatus for producing stretched film - Google Patents
Method and apparatus for producing stretched film Download PDFInfo
- Publication number
- WO1989004244A1 WO1989004244A1 PCT/JP1988/001143 JP8801143W WO8904244A1 WO 1989004244 A1 WO1989004244 A1 WO 1989004244A1 JP 8801143 W JP8801143 W JP 8801143W WO 8904244 A1 WO8904244 A1 WO 8904244A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- film
- compressed air
- tubular
- stretching
- slit
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
- B29C55/22—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of tubes
- B29C55/26—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of tubes biaxial
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
- B29C55/28—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of blown tubular films, e.g. by inflation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D3/00—Cutting work characterised by the nature of the cut made; Apparatus therefor
- B26D3/001—Cutting tubes longitudinally
Definitions
- the present invention relates to a method and an apparatus for producing a stretched film by heating and stretching a thermoplastic tubular film, and more particularly, to a production method and a production method suitable for producing a tubular stretched film in which bubbles in a stretching portion are permeable. Connect to device. Background art
- a tubular unstretched film is passed between two pairs of nib rolls arranged at an appropriate distance, and a tubular unstretched film is formed between two pairs of nib rolls by a heating device attached thereto. This is done by heating at once and injecting compressed air to form a bubble, which is taken up by a lower nib roll via a group of folding rolls.
- the injection of compressed air is only the start, and after forming a bubble of a predetermined size, a certain amount of compressed air is sealed in the bubble by closing the lower nib roll, and stretching is continued. It is.
- the internal air leaks from the film surface even if the upper and lower nib rolls are closed to contain the compressed air.
- the pubble adjusted to a predetermined size gradually shrinks, making it impossible to surround biaxial stretching.
- a continuous circumferential groove is formed in the lower nib roll, and compressed air is supplied by a tubular piercing body through the groove. Because the film comes into contact, the film is easily deformed due to frictional force, and the portion of the film that is not contacted and sandwiched between needle rolls undergoes lateral stretching due to the diameter of the tubular abutting body, Problems such as poor uniformity of the whole film and deterioration of flatness occur.
- Japanese Patent Application Laid-Open No. 54-139965 discloses a method in which a cut is made in the vicinity of the lower nip roll and a compressed air is supplied by injecting an air injection nozzle into the cut. It is more likely to puncture to make a nick. In particular, for films with low tear strength, the tearing part expands due to the stretching tension, making it impossible to cover the stretching. Disclosure of the invention
- the present invention has been obtained as a result of intensive studies in order to solve the above drawbacks.That is, a tubular thermoplastic resin film is passed between nib rolls having different peripheral velocities, and the resulting purple is expanded by heating under internal pressure. At the time of producing a stretched film, it is difficult to find a tube-like stretching method and a device that can be used to supply compressed air from a nozzle in a purple pipe.
- the nip roll is composed of at least three sets of nip rolls of R1, R2 and R3. When the respective peripheral velocities are r1, r2 and r3, the ratio of rl Zr2 / r3 is 0.1. — Adjustable to 0.8 / 1 / 1-1.1, but
- R 1 is the nibroll on the introduction side of the tubular unstretched film
- R 2 is the nibroll at the end of folding after tubular stretching
- R 3 is a take-off nibroll following the end of folding
- the present invention relates to a method for producing a stretched film, which is characterized in that it is taken out by a nib roll R3 after bypassing a squirting nozzle and a cutting knife device, and an apparatus used for the same. That.
- the apparatus and method of the present invention allow the internal pressure of the bubble to be adjusted automatically or automatically during the continuation of the tube stretching.
- FIG. 1 is a schematic view of an apparatus of the present invention and a view for explaining a situation where a tubular unstretched film is heated and expanded by using this apparatus.
- FIG. 2 is a side view of the situation shown in FIG. 1 when the film cutting knife device is provided in the gap of the slit-shaped compressed air blowing device.
- FIG. 3 is a structural explanatory view of the compressed air blowing nozzle device and the cutting knife device when the film cutting knife device is provided in the gap of the slit-shaped compressed air blowing device as viewed from the front.
- FIG. 4 is an explanatory view of the structure of FIG. 3 as viewed from the side.
- FIG. 5 is a side view of the situation shown in FIG. 1 when the film cutting knife device is provided at both ends of the nib roll with respect to the position of the slit-shaped compressed air blowing device.
- Fig. 6 is a structural explanatory view of a pressure air blowing nozzle device and a cutting knife device as viewed from the front when a film cutting knife device is provided at both ends of a nib roll with respect to a position of a slit-shaped pressure air blowing device. is there.
- FIG. 7 is an explanatory view of the structure of the photoelectric switch of the cutting knife section as viewed from above. BEST MODE FOR CARRYING OUT THE INVENTION
- the present inventors have conducted intensive studies to solve the above-mentioned disadvantages, and as a result, have completed the present invention.
- the present invention relates to a method for producing a stretched film by passing a tubular thermoplastic resin film between nib rolls having different peripheral velocities and stretching the film by heating under an internal pressure, and an apparatus used therefor.
- the niff roll consists of at least three sets of nibs, Rl, R2 and R3. When the respective peripheral speeds are rl, r2 and r3, the ratio of r1Zr2 / r3 is obtained. It can be adjusted to 0.1-0.8 / 1/1-1.1, but
- R 1 is the nibroll on the introduction side of the tubular unstretched film
- R 2 is the nibroll at the end of folding after tubular stretching
- R 3 is the take-off nip roll following the end of folding
- the compressed air which can be changed manually or automatically by detecting the diameter of the bubble, is expanded and stretched under heating by the compressed air blown out and supplied, and then folded by a folding device. And cut both ends into two flat films with a film cutting knife provided between the two rolls of Nib Roll R2, and guide each flat film to the left and right guide rolls.
- the present invention also relates to a method for producing a stretched film and a device for use in the method, wherein the slit-like blowing nozzle and the knife device for censoring are removed and then taken up by a nib roll R3.
- the internal pressure of purple is also increased during the tube stretching. It can be adjusted manually or automatically, and it can be suitably carried out particularly in the case of tube-like stretching of a porous film.
- 1 to 7 are examples of the device of the present invention, and are not limited to these examples as long as they have the function of the present invention.
- the apparatus according to the present invention is an apparatus for producing a stretched film by passing a tubular thermoplastic resin film between different nip rolls as shown in an explanatory view (FIG. 17), and performing a drawing by an internal pressure while heating to produce a stretched film.
- the wheel consists of at least three sets of nibbles R1, R2 and R3, where the ratio of r1 / r2 1 "3 is 0, where the peripheral velocities are r1, r2 and r3. 1-0.8 no 1 Z 1-1 ⁇ 1 can be adjusted in the range
- R 1 is the nibroll on the introduction side of the tubular unstretched film
- R 2 is the nibroll at the end of folding after tubular stretching
- R 3 is the take-off nip roll following the end of folding
- a heating device for heating the tubular film introduced between R 1 and R 2 and a folded g of the stretched tubular film, and the gap between the pair of rolls of the nipple R 2 is Adjustable, between the gears, a slit-shaped compressed air blowing nozzle device and two left and right film cutting knife devices that can move in the length direction of the nib roll R 2 are provided. Between R and R3, one or more for each flat film passage at a position where the two flat films 7, 7 'cut open can avoid the slit-shaped blowing nozzle device and the cutting knife device.
- An apparatus for producing a stretched film comprising: two or more guide rolls (8, 8).
- the compressed air blowing nozzle device 14 is composed of a compressed air blowing nozzle 6 and a compressed air introducing tube 12 as shown in FIGS. 3 and 6, and the nozzle 6 extends from between the gears of the Nipple R2 into the bubble 3.
- Supplying compressed air ⁇ The amount and pressure of compressed air is appropriate or the diameter of the bubble is detected.
- the bubble diameter detectors 15, 15, and the output controller 2 are automatically variable to maintain the specified purple diameter. 5
- Automatic compressed air supply valve 26 and compressed air It is equipped with a supply probe '26.
- the crawler knife device is connected to the rotating shaft rotating motors 11 and 11 ′, and the rotating shaft 13 and the rotating shaft 13 are screwed in opposite directions. Can be moved to the left and right by the female screw which is paired with the male screw of 13 and 13. It is fixed to the knife holder 19, 9, and 9 provided on the moving body 16 and 16 In order to prevent the compressed air from leaking out from between the nozzle part and the knife holder in the case of the slitting knives 5, 5, and in the case of FIG. In FIG. 6, holder support rods 18 and 18 for the cutting knife are provided.
- the nibroll R1 serves to seal the compressed air blown from the compressed air blowing nozzle 6 in the R2 portion of the tubular film at the upper portion, and has a peripheral speed 0.1 to 0.8 times the peripheral speed of the nibroll R2. Driven at speed.
- the peripheral speed ratio is determined by the desired stretch ratio. For example, in order to make the longitudinal magnification four times, the peripheral speed of the nib roll R 1 is set to 0.25 with respect to the nipper roll R 2. Adjust it.
- the gear between the pair of nib rolls R2 can be adjusted to, for example, 110 images, to the extent that the compressed air blowing nozzle 6 can be inserted in the gap (a). In the case of FIG. 6, it is sufficient that enough compressed air can be supplied into the bubble.
- the nip roll R 3 has a role of picking up the two films 13 cut by the cutting knife 5 and is driven at a peripheral speed ratio of about 1 to 1.1 with respect to the peripheral speed of the nib roll R 2.
- the peripheral speed of the nib roll R 2 and the nib roll R 3 may be the same, but the film may sag due to the load of the guide rolls 8 and 8, etc. in taking up the film, and the peripheral speed of the nib roll R 3
- the nip roll R 3 may separately take out two stretched flat films 7, 7, which are cut open as two pairs.
- the slit-shaped air blow nozzle 6 installed between the gaps (a) of the nib roll R 2 has a nozzle tip positioned near a line connecting the centers of the two rolls of the nib roll R 2, and a cut-out portion.
- the compressed air is blown into the elongate baffle according to the amount of air leaking from the airbag, etc., and has a role of holding a bubble of a predetermined size.
- the slit-shaped compressed air blowing nozzle 6 can be freely adjusted vertically with respect to the position of the nip roll R2.
- the width (in the roll length direction) of the slit-shaped compressed air blowing nozzle 6 can be appropriately selected.
- a film cutting knife device is provided in the gap of the slit-shaped compressed air blowing device.
- the nip roll is usually set to the length of the nip roll or longer than that, and as shown in Fig. 6, the film cutting knife device is provided at both ends of the nip roll with respect to the position of the slit-shaped compressed air blowing device.
- the width of the roll of the nozzle 6 in the length direction is set so that the film cutting knife when the space is moved to the minimum is within the folding diameter of the unstretched tube film to be used.
- a rotating shaft 13 is provided inside the slit-shaped pressurized air blowing nozzle 6, which is symmetrically threaded in opposite directions from the center, and this shaft is provided.
- 13 A knife holder 9 for incision with female threads for each male screw is attached to both sides of 3 and the rotating shaft 13 is rotated by the drive of the motor 11 so that the knife 5 for incision is symmetrical. You can move it. Of course, it is separated into 13 and 13 'around the rotation axis 13 and the motors 11 and 11 are connected to the left and right respectively, and the two cutting knives 5 and 5 are moved independently. You may be able to.
- the cutting knives 5,5 and 5,5 are supported.
- the incision knives 5, 5, Therefore, the rotating shaft 13 can be rotated to move in the length direction of the nib roll R2, and both ends can be cut open regardless of the width of the folded film during stretching.
- the knife holders 9, 9 for incision are attached to the support rods 18, 18 so as not to rotate together with the rotation of the rotating shaft 13.
- the photoelectric switch is attached to the knife holders 9, 9, 9 by the mounting brackets 24, 24, respectively.
- the position of the knife holder can be automatically moved.
- the photoelectric switch of the present embodiment includes a light projecting unit 21 that emits a light beam guided by the optical fiber 120, a light receiving unit 22 that receives the light beam, an optical fiber 23 that guides the received light beam, and a relay.
- the compressed air blowing suppressing rods 10, 10, 10 are connected to the incision knife holders 9, 9 to move in conjunction with the knife holders 9, 9.
- the width of the folded tubular film 3 to be cut is automatically detected by installing the diameter detectors 15 and 15 at the bottom of the pable, and the cutting knife 5 is moved to a position corresponding to this width. It can be automated as it can. Further, the fluctuation width of the bubble diameter can be reduced by linking the supplied compressed air amount with the stretchable bubble diameter detected by the bubble diameter detectors 15 and 15.
- the supplied compressed air amount is automatically provided according to the stretched bubble diameter detected by the bubble diameter detectors 15 and 15 '.
- the purple diameter detector 15, 15, 15, irradiates visible light, infrared light, or a laser, and detects each light beam reflected and measures the distance to the reflecting object by using a measurement sensor that measures the distance from the object. It measures distance.
- the bubble diameter detectors 15 and 15 ′ can detect the distance to the bubble at the intermediate stage of the heater 2 by providing an observation hole at the lower portion of the heater 2 or in the heater 2.
- the output controller 25 calculates the diameter of the bubble based on the measurement distance obtained from two or more distance measurement sensors (Pubble diameter detectors 15, 15,) and supplies compressed air according to the difference from the set purple diameter.
- the opening degree of the valve 26 is adjusted to control the same purple diameter as the set purple diameter.
- the compressed air supply valve 26 changes the valve opening degree according to a signal from the output controller 25 to adjust the amount of compressed air supplied from the blower 27.
- the folding roll group 4 has a function of folding the stretched bubble film 3 and guiding it to the nibble roll R2. 6 and take-off nibroll smoothly without contacting the cutting knife device: has the function of leading to R3.
- the unstretched film 1 is heated by a heater 2 installed so as to surround the annular stretched bubble in a ring shape, and is expanded by compressed air blown from a nozzle 6.
- FIGS. 117 to 117 of the apparatus S an example of the apparatus and the method for producing a stretched film of the present invention will be specifically described with reference to FIGS. 117 to 117 of the apparatus S.
- the present invention is not limited to the examples unless departing from the spirit of the present invention.
- the unstretched tubular film 1 that has not started to heat and expand is passed through the folding roll group 4 and the nib roll R2, and the motors 11 and 11 connected to the rotating shafts 13 and 13 separated from each other. It is operated independently and is cut open by the cutting knives 5, 5, adjusted to the folding width of the unstretched tubular film 1, and made into two flat films 7, 7, and guide rolls 8, 7, 8, And with Nibroll R3.
- the unstretched tubular film 1 is heated by the heater 2, and compressed air is supplied from the compressed air blowing nozzle 6 into the tube 3 to form a bubble 3, and then the nibbles R 1 and R located above and below are formed.
- Drive 2 and adjust heating heater 2 and nib roll for nib roll R 2 The peripheral speed ratio of R1 is 0.31, the ⁇ magnification is 0.2 times, and the compressed air volume is adjusted to 2.5 times the model magnification, and simultaneous biaxial stretching is performed to obtain a breathable biaxially stretched film 3.
- the folding width of the pubble 3 gradually increases.
- the obtained biaxially stretched film 3 was a film having good air permeability and good flatness.
- Example 1 The same unstretched annular film 1 as in Example 1 was passed through in the same manner as in Example 1 and taken out. Next, the unstretched annular film 1 was heated by the heater 2, and the bubble detectors 15 and 15, the main controller 25, the compressed air supply bubble 26, and the photoelectric switch and relay of the censor were operated.
- the obtained biaxially stretched film 3 was air permeable, but The bubbles were more stable, and the flat film that was cut open and wound was a film with a certain width and good flatness.
- the apparatus for producing a tubular stretched film of the present invention can supply compressed air from the nozzle of the slit-shaped compressed air blowing device provided between the gears of the nib roll R 2 even while the stretching is being performed, and thus leaks over time. Since the compressed air in the bubble can be replenished without stopping the stretching, the stretching at a constant stretching ratio can be continued for a long time. Furthermore, even when a porous film is produced by stretching a gas-permeable unstretched annular film or a non-stretched film that becomes gas-permeable by stretching, the air amount corresponding to the internal air leaking by ventilation is supplied by compressed air.
- the bubble diameter can always be kept constant, and a breathable stretched film can be manufactured stably for a long time.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
Abstract
This invention relates to a tubular stretching method for producing a stretched film by passing a tubular thermoplastic resin film between nip rollers having mutually different peripheral speeds and inflating the tube by the internal pressure under heating and a stretching apparatus to be employed therefor. The nip rollers consist at least of three sets of nip rollers, i.e. nip rollers R1 on the introduction side, nip rollers R2 at fold end portion after stretching and take-up nip rollers R3. A slit-like compressed air jet nozzle is disposed in the gap between a pair of rollers R2 and compressed air is jetted from this nozzle into a stretch portion bubble generated between R1 and R2 so as to inflate and stretch the bubble under heating. In this instance the compressed air is controlled either manually or automatically by sensing the bubble diameter in order to keep a desired bubble diameter, whenever necessary. After stretching, the tubular film is folded by a folding apparatus and is then guided into the nip rollers R2 and its both ends are cut open into two flat films by a film opening knife disposed inside or outside the nozzle between the nip rollers R2. Each flat film is then guided to right and left guide rollers and is taken up by the nip roller R3 after the slit-like jet nozzle and knife are withdrawn. The apparatus of the present invention can adjust either manually or automatically the bubble diameter and the inner pressure during tube stretching operation and can be used advantageously for tubular stretching of porous films.
Description
B月 田書 延伸フィルムの製造方法及び製造装置 技術分野 B / Tazashi Stretched film manufacturing method and manufacturing equipment
本発明は熱可塑性管状フィルムを加熱延伸して延伸フィルムを製 造する方法及び製造装置に関し、 更に詳しくは延伸部のバブルが通 気性であるチューブ状延伸フィルムの製造に好適な製造方法及び製 造装置に閡する。 背景技術 The present invention relates to a method and an apparatus for producing a stretched film by heating and stretching a thermoplastic tubular film, and more particularly, to a production method and a production method suitable for producing a tubular stretched film in which bubbles in a stretching portion are permeable. Connect to device. Background art
一般に管状二軸延伸フイルムの製造は、 適宜の距離を置いて配し た二対のニッブロール間に管状未延伸フイルムを通し、 二対のニッ ブロール間において付属する加熱装置によって管状未延伸フィルム を所定溫度に加熱するとともに、 圧空を注入することによってパブ ルを形成ざせ、 折りたたみロール群を経由して下部ニッブロールで 引取ることによって行なわれている。 Generally, in manufacturing a tubular biaxially stretched film, a tubular unstretched film is passed between two pairs of nib rolls arranged at an appropriate distance, and a tubular unstretched film is formed between two pairs of nib rolls by a heating device attached thereto. This is done by heating at once and injecting compressed air to form a bubble, which is taken up by a lower nib roll via a group of folding rolls.
圧空の注入は、 一般的には、 スタートのみであり、 所定の大きさ のバプルを形成した後は、 下部ニッブロールを閉じることによって、 一定量の圧空をバブル内に封じ込め、 延伸を继続するものである。 In general, the injection of compressed air is only the start, and after forming a bubble of a predetermined size, a certain amount of compressed air is sealed in the bubble by closing the lower nib roll, and stretching is continued. It is.
しかしながら、 空気を封じ込んでバプルを形成する前記のニ軸延 伸フィルムの製造方法は、 延伸を港続中に微量ではあるが上下の各 ニッブロール部からの圧空の漏れによって徐々にバブルが縮小する ために、 折りたたみニッブロール群の開き角度を調整して横倍率の 低下を防止している。 しかしながら、 折りたたみニッブロール群の 開き角度を調整すると延伸点が変化して横倍率の增加に寄与しない 場合がある。 また、 スタート時の操作によって所定の大きさのパプ ルが得られない場合、 再度、 スタート操作をく り返す必要があり繁 雑である。 まして、 通気性フィルムの場合は、 圧空を封じこめるた め上下のニッブロールを閉じても内部の空気がフイルム面から漏れ
出て、 所定の大きさに調節したパブルは徐々に縮小し、 二軸延伸を 纊繞することが不可能となる。 However, in the above-described method of manufacturing a biaxially stretched film that forms a bubble by enclosing air, bubbles are gradually reduced due to leakage of pressurized air from each of the upper and lower nib rolls, although a small amount during stretching. For this reason, the opening angle of the folding nib roll group is adjusted to prevent a decrease in the lateral magnification. However, when the opening angle of the folding nib roll group is adjusted, the stretching point may change and may not contribute to the increase in the lateral magnification. In addition, when a predetermined size of the pipe cannot be obtained by the operation at the start, it is necessary to repeat the start operation again, which is complicated. Furthermore, in the case of a breathable film, the internal air leaks from the film surface even if the upper and lower nib rolls are closed to contain the compressed air. After coming out, the pubble adjusted to a predetermined size gradually shrinks, making it impossible to surround biaxial stretching.
これらの対策として、 圧空を港繞的に注入する方法があり、 古く は、 特公昭 33— 3727、 特閲昭 54— 139965等が提案されている。 As a countermeasure for this, there is a method of injecting compressed air into the harbor. In the past, Japanese Patent Publication Nos. 33-3727 and 54-139965 have been proposed.
例えば、 特公昭 33— 3727等は下部ニッブロールに連続円周溝を設 け、 その溝を通した管状突きさ-し体によって圧空の供辁を行なうも のであるが、 該管状突きさし体にフィルムが接触するために、 摩擦 力によって、 フィルムが変形しやすく、 また、 接触せずニヅブロー ルではさまれて引取られるフィルムの部分に対して管状突きさし体 の管径による横延伸を受け、 フィルム全体としての均一性が劣り、 平面性の悪化等の問題が発生する。 For example, in Japanese Patent Publication No. 33727/1987, a continuous circumferential groove is formed in the lower nib roll, and compressed air is supplied by a tubular piercing body through the groove. Because the film comes into contact, the film is easily deformed due to frictional force, and the portion of the film that is not contacted and sandwiched between needle rolls undergoes lateral stretching due to the diameter of the tubular abutting body, Problems such as poor uniformity of the whole film and deterioration of flatness occur.
また、 特開昭 54— 139965は、 下部ニップロールの直ぐ上手付近に 切裂を入れ、 この切裂部にエアー注入ノズルを突込んで圧空の供給 を行なうものであるが、 一度パプルを形成させてから切裂きを入れ るために、 パンクする可能性が大きい。 特に引裂強度の弱いフィル ムに対しては、 延伸張力によって切裂部が広がり、 延伸を港繞する ことは不可能となる。 発明の開示 Japanese Patent Application Laid-Open No. 54-139965 discloses a method in which a cut is made in the vicinity of the lower nip roll and a compressed air is supplied by injecting an air injection nozzle into the cut. It is more likely to puncture to make a nick. In particular, for films with low tear strength, the tearing part expands due to the stretching tension, making it impossible to cover the stretching. Disclosure of the invention
本発明は係る欠点を解消するために鋭意検討した結果得られたも のであり、 即ち、 管状熱可塑性樹脂フィルムを周速度が異なるニッ ブロール間に通し、 生ずるパプルを加熱下に内圧により膨張させて 延伸フィルムを製造する際にパプル内にスリ、、) ト状ノズルから港続 して圧空を供給し繞けることができるチューブ状延伸方法及びそれ に用いる装置に鬨する。 該ニップロールは少なくとも R 1、 R 2 及び R 3の 3組のニップロールからなり、 各々の周速度を r 1、 r 2および r 3とした時、 r l Z r 2 / r 3の比を 0 . 1— 0 . 8 / 1 / 1一 1 . 1に調節が可能であり、 但し The present invention has been obtained as a result of intensive studies in order to solve the above drawbacks.That is, a tubular thermoplastic resin film is passed between nib rolls having different peripheral velocities, and the resulting purple is expanded by heating under internal pressure. At the time of producing a stretched film, it is difficult to find a tube-like stretching method and a device that can be used to supply compressed air from a nozzle in a purple pipe. The nip roll is composed of at least three sets of nip rolls of R1, R2 and R3. When the respective peripheral velocities are r1, r2 and r3, the ratio of rl Zr2 / r3 is 0.1. — Adjustable to 0.8 / 1 / 1-1.1, but
R 1は管状未延伸フィルム導入側ニッブロール R 1 is the nibroll on the introduction side of the tubular unstretched film
R 2は管状延伸後の折畳み終了部のニッブロール
R 3は折畳み終了部に続く引取ニッブロール R 2 is the nibroll at the end of folding after tubular stretching R 3 is a take-off nibroll following the end of folding
であり、 R 2の一対のロール間のギャッブ間に設けられたスリツ ト 状圧空吹き出しノズルから R 1 と R 2の間の延伸部パプル内に圧空 を、 この際希望により所定のバブル径を維持するために手動または バブル径を検知して自動的に変量された圧空を、 吹き出して供給さ れる圧空によってパプルを加熱下に膨張延伸させた後、 折畳み装置 により折畳み、 R 2のニッブロールに導き、 その両端をニッブロー ル R 2の 2本のロール間に設けられたフィルム切開用ナイフによつ て 2枚のフラッ トフィルムに切開き、 それぞれのフラッ トフイルム を左右のガイ ドロールに導いて、 前記のスリツ ト状吹出ノズル及び 切開用ナイフ装置を回避させた後ニッブロール R 3により引取るこ とを特徵とする延伸フィルムの製造方法及びそれに用いる装置に関 する。 Pressurized air from the slit-shaped pressurized air blowing nozzle provided between the gaps between the pair of rolls of R2 into the expanded portion purple between R1 and R2, maintaining a predetermined bubble diameter if desired In order to perform this process, the compressed air that has been manually or automatically detected by detecting the bubble diameter is expanded and stretched while heating the compressed air by blowing out the supplied air, then folded by a folding device, and guided to the R2 nibroll, Both ends are cut into two flat films by a film cutting knife provided between two rolls of Nibble Roll R2, and each flat film is guided to the right and left guide rolls, and the slit is formed. The present invention relates to a method for producing a stretched film, which is characterized in that it is taken out by a nib roll R3 after bypassing a squirting nozzle and a cutting knife device, and an apparatus used for the same. That.
本発明の装置、 方法によりチューブ延伸継続中にもバブル内圧を 適茸または自動で調節でき、 特に通気性フィルムのチューブ状延伸 でも好適に実施できる。 図面の簡単な説明 The apparatus and method of the present invention allow the internal pressure of the bubble to be adjusted automatically or automatically during the continuation of the tube stretching. BRIEF DESCRIPTION OF THE FIGURES
第 1図は本発明の装置の概略図及びこの装置を用いて管状未延伸 フィルムを加熱膨張延伸する状況を説明する図である。 FIG. 1 is a schematic view of an apparatus of the present invention and a view for explaining a situation where a tubular unstretched film is heated and expanded by using this apparatus.
第 2図はフィルム切開用ナイフ装置がスリッ ト状圧空吹出装置の ギャップ内に設けられている場合の第 1図の状況を側面から見た図 である。 FIG. 2 is a side view of the situation shown in FIG. 1 when the film cutting knife device is provided in the gap of the slit-shaped compressed air blowing device.
第 3図はフィルム切開用ナイフ裝蘆がスリッ ト状圧空吹出装置の ギャップ内に設けられている場合の圧空吹込ノズル装置及び切閬ナ ィフ装置を正面から見た構造説明図である。 FIG. 3 is a structural explanatory view of the compressed air blowing nozzle device and the cutting knife device when the film cutting knife device is provided in the gap of the slit-shaped compressed air blowing device as viewed from the front.
第 4図は第 3図の構造を側面から見た説明図である。 FIG. 4 is an explanatory view of the structure of FIG. 3 as viewed from the side.
第 5図はフィルム切閗用ナイフ装置がスリッ ト状圧空吹出装置の 位置に対してニッブロールの両端側に設けられている場合の第 1図 の状況を側面から見た図である。
第 6図はフィルム切開用ナイフ装置がスリッ ト状圧空吹出装置の 位置に対してニッブロールの両端側に設けられている場合の圧空吹 込ノズル装置及び切開ナイフ装置を正面から見た構造説明図である。 第 7図は切開用ナイフ部の光電スィツチの構造を上部から見た説 明図である。 発明を実施するための最良の形態 FIG. 5 is a side view of the situation shown in FIG. 1 when the film cutting knife device is provided at both ends of the nib roll with respect to the position of the slit-shaped compressed air blowing device. Fig. 6 is a structural explanatory view of a pressure air blowing nozzle device and a cutting knife device as viewed from the front when a film cutting knife device is provided at both ends of a nib roll with respect to a position of a slit-shaped pressure air blowing device. is there. FIG. 7 is an explanatory view of the structure of the photoelectric switch of the cutting knife section as viewed from above. BEST MODE FOR CARRYING OUT THE INVENTION
本発明者等は、 前記の欠点を解消するために鋭意検討した結果、 本発明を完成するに至ったものである。 The present inventors have conducted intensive studies to solve the above-mentioned disadvantages, and as a result, have completed the present invention.
即ち、 本発明は管状熱可塑性樹脂フィルムを周速度が異なるニッブ ロール間に通し、 加熱下に内圧により延伸して延伸フィルムを製造 する方法及びそれに用いる装置に閬する。 該ニッフ'ロールは少なく とも R l、 R 2及び R 3の 3組のニッブロールからなり、 各々の周 速度を r l、 r 2および r 3とした時、 r 1 Z r 2 / r 3の比を 0 . 1一 0 . 8 / 1 / 1 - 1 . 1に調節が可能であり、 但し That is, the present invention relates to a method for producing a stretched film by passing a tubular thermoplastic resin film between nib rolls having different peripheral velocities and stretching the film by heating under an internal pressure, and an apparatus used therefor. The niff roll consists of at least three sets of nibs, Rl, R2 and R3. When the respective peripheral speeds are rl, r2 and r3, the ratio of r1Zr2 / r3 is obtained. It can be adjusted to 0.1-0.8 / 1/1-1.1, but
R 1は管状未延伸フィルム導入側ニッブロール R 1 is the nibroll on the introduction side of the tubular unstretched film
R 2は管状延伸後の折畳終了部のニッブロール R 2 is the nibroll at the end of folding after tubular stretching
R 3は折畳終了部に続く引取ニップロール R 3 is the take-off nip roll following the end of folding
であり、 R 2の一対のロール間のギャッブ間に設けられたスリツ ト 状圧空吹出ノズルから R 1 と R 2の間の延伸部パブル内に圧空を、 この際希望により所定のパプル径を維持するために手動でまたはバ プル径を検知して自動的に変量し得る圧空を、 吹き出して供給され る圧空によってパプルを加熱下に膨張延伸させた後、 折畳装置によ り折畳み、 R 2のニッブロールに導き、 その両端をニッブロール R 2の 2本のロール間に設けられたフィルム切閲用ナイフによって 2 枚のフラッ トフィルムに切閲き、 それぞれのフラッ トフイルムを左 右のガイ ドロールに導いて、 前記のスリッ ト状吹出ノズル及び切閲 用ナイフ装置を回避させた後ニッブロール R 3により引取ることを 特徴とする延伸フィルムの製造方法及びそれに用いる装置に関する。 本発明の装蘆、 方法によりチューブ延伸继繞中にもパプル内圧を
手動でまたは自動で調節でき、 特に多孔性フィルムのチュープ状延 伸でも好適に実施できる。 And pressurized air from the slit-shaped pressurized air blowing nozzle provided between the gaps between the pair of rolls of R2 into the extended portion bubble between R1 and R2, and at this time, maintain a predetermined purple diameter if desired. In order to adjust the pressure, the compressed air, which can be changed manually or automatically by detecting the diameter of the bubble, is expanded and stretched under heating by the compressed air blown out and supplied, and then folded by a folding device. And cut both ends into two flat films with a film cutting knife provided between the two rolls of Nib Roll R2, and guide each flat film to the left and right guide rolls. The present invention also relates to a method for producing a stretched film and a device for use in the method, wherein the slit-like blowing nozzle and the knife device for censoring are removed and then taken up by a nib roll R3. According to the method and method of the present invention, the internal pressure of purple is also increased during the tube stretching. It can be adjusted manually or automatically, and it can be suitably carried out particularly in the case of tube-like stretching of a porous film.
本発明を更に詳しく説明する。 尚、 図 1〜7は本発明の装蘆の例 であり、 本発明の機能を有する限りこれらの例に限られるものでは ない。 The present invention will be described in more detail. 1 to 7 are examples of the device of the present invention, and are not limited to these examples as long as they have the function of the present invention.
尚、 図中各符号は.以下の部分を示す。 Each symbol in the figure indicates the following part.
R 1 第 1のニッブロール R 1 First nibble
R 2 第 2のニッブロール ' R 2 Second nibble ''
R 3 第 3のニッブロール R 3 Third nibble
1 未延伸管状フィルム 1 Unstretched tubular film
2 加熱ヒーター 2 Heater
3 延伸バブル 3 Stretch bubble
4 折畳ロール群 4 Folding roll group
5, 5 ' 切開用ナイフ 5, 5 'incision knife
6 圧空吹込ノズル 6 Compressed air blowing nozzle
7 延伸フラッ ト状フィルム 7 Stretched flat film
8 , 8, ガイ ドロール 8, 8, Guide roll
9 , 9 ' 切閲用ナイフホルダー 9, 9 'Knife holder for censorship
1 0、 1 0, 圧空漏れ防止用棒 1 0, 1 0, Compressed air leak prevention rod
1 1, 1 1, ナイフホルダー移動用モーター 1 1, 1 1, Knife holder moving motor
1 2 圧空導入パイブ 1 2 Pneumatic introduction pipe
1 3, 1 3, ネジ切した回転軸 1 3, 1 3, Threaded rotary axis
14 圧空吹込ノズル装置 14 Compressed air injection nozzle device
1 5, 1 5, バブル径検出器 15,5, bubble diameter detector
1 6, 1 6, ネジ切した移動体 16, 16, screwed moving body
1 7, 1 7, ベアリング 17, 17, bearing
1 8, 1 8, 切開ナイフ用ホルダー支持棒 1/8, 1/8, Holder support bar for incision knife
1 9, 1 9, 取付金具 19, 19, mounting bracket
20 , 23 光ファイバ一 20, 23 Optical fiber
21 , 22 光電スィツチ
2 4 光電スィッチ 8取付金具 21, 22 Photoelectric switch 2 4 Photoelectric switch 8 Mounting bracket
2 5 出力コントローラー 2 5 Output controller
2 6 自動圧空供給バルブ 2 6 Automatic pneumatic supply valve
2 7 圧空供給ブロワ一 2 7 Compressed air supply blower
本発明の装置は説明図 (第 1一 7図) に示すように管状熱可塑性 樹脂フィルムを異なるニッブロール間に通し、 加熱下に内圧により パプル延伸して延伸フィルムを製造する装置において、 該ニップロ ールは少なくとも R 1、 R 2及び R 3の 3組のニッブロールから成 り、 それぞれの周速度を r 1、 r 2及び r 3とした時、 r 1 / r 2 1" 3の比を 0 . 1— 0 . 8ノ 1 Z 1— 1 . · 1の範囲に調節が可能 であり、 但し、 The apparatus according to the present invention is an apparatus for producing a stretched film by passing a tubular thermoplastic resin film between different nip rolls as shown in an explanatory view (FIG. 17), and performing a drawing by an internal pressure while heating to produce a stretched film. The wheel consists of at least three sets of nibbles R1, R2 and R3, where the ratio of r1 / r2 1 "3 is 0, where the peripheral velocities are r1, r2 and r3. 1-0.8 no 1 Z 1-1 · 1 can be adjusted in the range
R 1は管状未延伸フィルム導入側ニッブロール R 1 is the nibroll on the introduction side of the tubular unstretched film
R 2は管状延伸後の折畳終了部のニッブロール R 2 is the nibroll at the end of folding after tubular stretching
R 3は折畳終了部に続く引取ニップロール R 3 is the take-off nip roll following the end of folding
であり、 R 1 と R 2の間に導入ざれた管状フィルムを加熱する加熱 装置及ぴ延伸された管状フィルムを折畳装 gを具備し、 ニップロ一 ル R 2の一対のロール間のギャップは調節が可能であり、 そのギヤ ッブ間にはスリッ ト状圧空吹出ノズル装置及びニッブロール R 2の 長さ方向に移動可能な左右 2本のフィルム両端切開用ナイフ装置が 設けられ、 更に、 R 2と R 3の間に、 切開かれた 2枚のフラッ トフ イルム 7、 7 ' が前記のスリッ ト状吹出ノズル装置及び切開用ナイ フ装置を回避させ得る位置に各フラットフィルム通路毎にそれぞれ 1 または 2以上のガイ ドロール 8、 8, を具備することを特徴とす る延伸フィルムの製造装置。 A heating device for heating the tubular film introduced between R 1 and R 2 and a folded g of the stretched tubular film, and the gap between the pair of rolls of the nipple R 2 is Adjustable, between the gears, a slit-shaped compressed air blowing nozzle device and two left and right film cutting knife devices that can move in the length direction of the nib roll R 2 are provided. Between R and R3, one or more for each flat film passage at a position where the two flat films 7, 7 'cut open can avoid the slit-shaped blowing nozzle device and the cutting knife device. An apparatus for producing a stretched film, comprising: two or more guide rolls (8, 8).
前記圧空吹出ノズル装置 1 4は第 3図及び 6図に示すように圧空 吹込ノズル 6と圧空導入パイブ 1 2から成り、 ノズル 6がニップロ ール R 2のギヤッブ間からバブル 3の中に向かって圧空を供給する < 圧空の量及び圧は適宜又はパプル径を検出し、 所定のパプル径を 維持するように自動的に変量し得るようにバブル径検出器 1 5、 1 5, 、 出力コントローラー 2 5、 自動圧空供給パルブ 2 6及び圧空
供給プロヮー' 2 6を具備している。 The compressed air blowing nozzle device 14 is composed of a compressed air blowing nozzle 6 and a compressed air introducing tube 12 as shown in FIGS. 3 and 6, and the nozzle 6 extends from between the gears of the Nipple R2 into the bubble 3. Supplying compressed air <The amount and pressure of compressed air is appropriate or the diameter of the bubble is detected. The bubble diameter detectors 15, 15, and the output controller 2 are automatically variable to maintain the specified purple diameter. 5, Automatic compressed air supply valve 26 and compressed air It is equipped with a supply probe '26.
又、 前記切閲用ナイフ装置は第 3、 6図に示すように、 回転軸回 転用モーター 1 1、 1 1 ' に結合し、 左右逆方向にネジ切した回転 軸 1 3、 回転軸 1 3、 1 3, の雄ネジと組に成っている雌ネジによ り左右に移動できる移動体 1 6、 1 6, に設けられたナイフホルダ 一 9、 9, 、 ナイフホルダー 9、 9, に固定される切開き用ナイフ 5、 5, 及び、 第 3図の場合にはノズル部とナイフホルダーとの間 から圧空が漏れ出ないように第 4図のように圧空漏れ防止用棒 1 0、 1 0, が、 又、 第 6図の場合には切開ナイフ用ホルダー支持棒 1 8、 1 8, が設けられている。 Also, as shown in FIGS. 3 and 6, the crawler knife device is connected to the rotating shaft rotating motors 11 and 11 ′, and the rotating shaft 13 and the rotating shaft 13 are screwed in opposite directions. Can be moved to the left and right by the female screw which is paired with the male screw of 13 and 13. It is fixed to the knife holder 19, 9, and 9 provided on the moving body 16 and 16 In order to prevent the compressed air from leaking out from between the nozzle part and the knife holder in the case of the slitting knives 5, 5, and in the case of FIG. In FIG. 6, holder support rods 18 and 18 for the cutting knife are provided.
ニッブロール R 1 は、 管状フイルムの R 2部の圧空吹込ノズル 6 より吹込まれる圧空を上部で封止する役目をし、 ニッブロール R 2 の周速度に対して 0 . 1〜0 . 8倍の周速度で駆動される。 この周 速度比は、 所望する^延伸倍率によって決定されるものであり、 例 えば縦倍率を 4倍とするには、 ニッブロール R 1の周速はニップロ ール R 2に対し 0 . 2 5に調整すれば良い。 The nibroll R1 serves to seal the compressed air blown from the compressed air blowing nozzle 6 in the R2 portion of the tubular film at the upper portion, and has a peripheral speed 0.1 to 0.8 times the peripheral speed of the nibroll R2. Driven at speed. The peripheral speed ratio is determined by the desired stretch ratio. For example, in order to make the longitudinal magnification four times, the peripheral speed of the nib roll R 1 is set to 0.25 with respect to the nipper roll R 2. Adjust it.
ニッブロール R 2の一対のロール間のギヤッブは、 第 3図の場合 はそのギャップ ( a ) 内に圧空吹込ノズル 6を挟蔵し得る程度例え ば 1一 1 0画に調整が可能であるが、 第 6図の場合はバブル内に充 分な圧空を供給できる程度であればよい。 In the case of FIG. 3, the gear between the pair of nib rolls R2 can be adjusted to, for example, 110 images, to the extent that the compressed air blowing nozzle 6 can be inserted in the gap (a). In the case of FIG. 6, it is sufficient that enough compressed air can be supplied into the bubble.
二ッブロール R 3は切開用ナイフ 5で切開かれた 2枚のフイルム 1 3を引取る役目を持ち、 ニッブロール R 2の周速度に対して 1〜 1 . 1程度の周速度比で駆動される。 基本的には、 ニッブロール R 2とニッブロール R 3は同じ周速度で良いが、 フィルムの引取にお いて、 ガイ ドロール 8及び 8, 等の負荷によってフイルムがたるむ 場合があり、 ニッブロール R 3の周速度を若干早く してフィルムに テンションをかけ引取ることによってこれらの問題を解決すること ができる。 The nip roll R 3 has a role of picking up the two films 13 cut by the cutting knife 5 and is driven at a peripheral speed ratio of about 1 to 1.1 with respect to the peripheral speed of the nib roll R 2. Basically, the peripheral speed of the nib roll R 2 and the nib roll R 3 may be the same, but the film may sag due to the load of the guide rolls 8 and 8, etc. in taking up the film, and the peripheral speed of the nib roll R 3 These problems can be solved by making the film slightly faster and applying tension to the film.
なお、 ニップロール R 3は、 2対として切開かれた 2枚の延伸フ ラッ ト状フィルム 7、 7, を各々別々に引取るようにしても良い。
ニッブロール R 2のギャップ ( a ) 間に設置ざれるスリッ ト状圧 空吹込ノズル 6は、 ニッブロール R 2の 2本のロールの中心間を結 ぶ線上付近にノズル先端が位蘆し、 切開き部等から漏れる空気量に 応じて圧空を延伸バプル内に吹込み、 所定の'大きさのバブルを保持 する役目を有する。 該スリツ ト状圧空吹込ノズル 6はニップロール R 2の位置に対して自由に上下方向に調整することができる。 The nip roll R 3 may separately take out two stretched flat films 7, 7, which are cut open as two pairs. The slit-shaped air blow nozzle 6 installed between the gaps (a) of the nib roll R 2 has a nozzle tip positioned near a line connecting the centers of the two rolls of the nib roll R 2, and a cut-out portion. The compressed air is blown into the elongate baffle according to the amount of air leaking from the airbag, etc., and has a role of holding a bubble of a predetermined size. The slit-shaped compressed air blowing nozzle 6 can be freely adjusted vertically with respect to the position of the nip roll R2.
また、 スリッ ト状圧空吹込ノズル 6の巾 (ロール長さ方向) は適 宜選定できるが、 第 3図のようにフィルム切開用ナイフ装置がスリ ット状圧空吹出装置のギャップ内に設けられている場合は通常ニッ プロールの長ざ又はそれより長い程度に設定され、 第 6図のように フィルム切開用ナイフ装置がスリッ ト状圧空吹出装置の位置に対し てニッブロールの両端側に設けられている場合はノズル 6のロール の長さ方向の巾は、 間隔を最も狭く移動したときのフィルム切開用 ナイフが、 使用予定の未延伸チューブフィルムの折径内に入る程度 に設定される。 ' The width (in the roll length direction) of the slit-shaped compressed air blowing nozzle 6 can be appropriately selected. However, as shown in FIG. 3, a film cutting knife device is provided in the gap of the slit-shaped compressed air blowing device. In this case, the nip roll is usually set to the length of the nip roll or longer than that, and as shown in Fig. 6, the film cutting knife device is provided at both ends of the nip roll with respect to the position of the slit-shaped compressed air blowing device. In this case, the width of the roll of the nozzle 6 in the length direction is set so that the film cutting knife when the space is moved to the minimum is within the folding diameter of the unstretched tube film to be used. '
フィルム切り開きナイフ 5、 5, を移動可能ならしめる方法とし て、 例えば該スリッ ト状圧空吹込ノズル 6内部に中央部より対称に 互に逆向きのネジを切った回転軸 1 3を設け、 この軸 1 3の両側に それぞれの雄ネジに対する雌ネジ部を有する切開用ナイフホルダー 9を取付け、 該回転軸 1 3をモーター 1 1の駆動によって回転させ ることによって、 切閉用ナイフ 5を左右対称に移 jすることができ る。 もちろん該回転軸 1 3を中心で 1 3、 1 3 ' に分離し、 左右そ れぞれにモーター 1 1、 1 1 , を連結し、 2本の切閲 ナイフ 5、 5, を独立に移動できるようにしても良い。 As a method for allowing the film slitting knives 5, 5 to be movable, for example, a rotating shaft 13 is provided inside the slit-shaped pressurized air blowing nozzle 6, which is symmetrically threaded in opposite directions from the center, and this shaft is provided. 13 A knife holder 9 for incision with female threads for each male screw is attached to both sides of 3 and the rotating shaft 13 is rotated by the drive of the motor 11 so that the knife 5 for incision is symmetrical. You can move it. Of course, it is separated into 13 and 13 'around the rotation axis 13 and the motors 11 and 11 are connected to the left and right respectively, and the two cutting knives 5 and 5 are moved independently. You may be able to.
一方、 スリツ ト状圧空吹込みノズル 6が図 6の場合のように未延 伸環状フィルム 1の折巾以下の巾を有する場合、 切開用ナイフ 5、 5, およびナイフ 5、 5, を支持している切り閲き用ナイフホルダ 一 9、 9 ' はスリッ ト状圧空吹き込みノズル 6の両外側に位置して いて延伸檨フレーム等へ取付金具 1 9、 1 9, によって取り付けら れる。 上記と同様に切開用ナイフ 5、 5, はモーター 1 1の駆動に
よって回転軸 1 3を回転し、 ニッブロール R 2の長さ方向に移動が 可能であり、 延伸継繞中折畳フィルムの巾がどのような大きさであ つても両端を切り開くことができる。 On the other hand, if the slit-shaped compressed air blowing nozzle 6 has a width equal to or less than the folding width of the unexpanded annular film 1 as in the case of FIG. 6, the cutting knives 5,5 and 5,5 are supported. The cleaving knife holders 19, 9 'are located on both outer sides of the slit-shaped pressurized air blowing nozzle 6, and are attached to the extension frame by a mounting bracket 19, 19, or the like. In the same manner as above, the incision knives 5, 5, Therefore, the rotating shaft 13 can be rotated to move in the length direction of the nib roll R2, and both ends can be cut open regardless of the width of the folded film during stretching.
この場合、 切開用ナイフホルダー 9、 9, は回転軸 1 3の回転と ともに回転しないように支持棒 1 8、 1 8, に取り付けられる。 こ の場合ニッブロール R 2の長さ方向へ滑らかに移動するようにベア リング 1 7、 1 7, などを具備せしめるのが好ましい。 In this case, the knife holders 9, 9 for incision are attached to the support rods 18, 18 so as not to rotate together with the rotation of the rotating shaft 13. In this case, it is preferable to provide bearings 17, 17 and the like so as to smoothly move in the longitudinal direction of the nib roll R2.
延伸继続中折畳フィルムのフィルムの両端の切開巾を自動的に調 節するために切閲用ナイフホルダー 9、 9, に各々取付金具 2 4、 2 4, によって光電スィッチが取り付けることにより、 ナイフホル ダ一の位置を自動的に移動せしめるようにすることができる。 本例 の光電スイッチは光ファイバ一 2 0によって導かれた光線を放射す る投光部 2 1 と光線を受光する受光部 2 2と受光光線を導く光ファ ィバー 2 3及びリレーから成る。 フィルム巾が小さくなりフィルム によって光線が遮られていた内側の光電スィッチが光線を受光する ようになるとモーター 1 1、 1 1 ' のスィツチが入り、 回転軸 1 3、 1 3, を回転し切開用ナイフホルダーを内側へ移動させる。 In order to automatically adjust the incision width at both ends of the foldable film during the stretching, the photoelectric switch is attached to the knife holders 9, 9, 9 by the mounting brackets 24, 24, respectively. The position of the knife holder can be automatically moved. The photoelectric switch of the present embodiment includes a light projecting unit 21 that emits a light beam guided by the optical fiber 120, a light receiving unit 22 that receives the light beam, an optical fiber 23 that guides the received light beam, and a relay. When the width of the film becomes smaller and the inner photoelectric switch, where the light was blocked by the film, began to receive the light, the switches of motors 11 and 11 'were turned on, and the rotating shafts 13 and 13 were rotated to make incisions. Move the knife holder inward.
逆にフィルム巾が広くなり光線を受光していた外側の光電スィッ チが光線を折り畳んだフィルムによって遮られるとモーター 1 1、 1 1 , のスィッチが入り回転軸 1 3、 1 3, を上記と逆方向に回転 し切り開き用ナイフホルダーを外側へ移動させる。 即ち、 折り畳ん だフィルム端を常に内外の光電スィッチ二点間に位置する様に移動 し、 切開用ナイフ巾から逸脱しない様にして切開を自動的に港続す ることができる。 Conversely, when the width of the film is widened and the outer photoelectric switch that received the light beam is blocked by the film that folded the light beam, the switches of motors 11, 11, and 11 enter and the rotating shafts 13, 13, are moved as described above. Rotate in the opposite direction to move the knife holder outward. In other words, the folded film end is moved so that it is always positioned between the inner and outer photoelectric switches, and the incision can be automatically continued without deviating from the incision knife width.
第 3図の場合、 即ち、 スリツ ト状圧空吹込ノズル 6がニッブロー ル R 2における折畳フィルムの巾より広い場合は切開用ナイフ 5、 5, の左右両端の外側は吹込むべき延伸バブルが存在しておらずス リッ ト状ノズル 6から外気に向かって無用に圧空が吹き出すため、 スリッ ト状ノズルギャップ ( a ) より大きい直径を有しスリッ ト状 圧空吹込ノズル 6の巾の約半分の長さを有する円柱状の圧空吹出抑
制用棒 1 0をナイフ用ホルダー 9、 9, のそれぞれ左右外側、 且つ、 スリット状圧空吹込ノズル 6のスリツ ト状ノズル内部のスリッ ト部 直下に設置することによって圧空のパブル外への吹出を減少できる。 その場合、 圧空吹出抑制用棒 1 0、 1 0, は切開ナイフホルダー 9、 9, と連結することによってナイフホルダー 9、 9, と連動して移 動させることが好適である。 In the case of Fig. 3, that is, when the slit-shaped pressurized air blowing nozzle 6 is wider than the width of the folding film in the nibble roll R2, there are stretched bubbles to be blown on the outside of the left and right ends of the cutting knives 5,5,5. Since the compressed air blows unnecessarily out of the slit-shaped nozzle 6 toward the outside air, it has a larger diameter than the slit-shaped nozzle gap (a) and is about half the width of the slit-shaped compressed air blow-in nozzle 6 Cylindrical compressed air blowing By installing the control rod 10 on the left and right outer sides of the knife holders 9 and 9 and directly below the slit inside the slit-shaped compressed air blowing nozzle 6, the compressed air can be blown out of the bubble. Can be reduced. In this case, it is preferable that the compressed air blowing suppressing rods 10, 10, 10 are connected to the incision knife holders 9, 9 to move in conjunction with the knife holders 9, 9.
また、 切開く対象である折畳んだ管状フィルム 3の幅をパブルの 下部にパブル径検出器 1 5、 1 5, を設けて自動検出し、 この幅に 対応する位置に切開用ナイフ 5を移動できるように、 自動化するこ ともできる。 又、 供耠する圧空量を前記のバブル径検出器 1 5、 1 5, で検出された延伸パブル径と連動化することによつてバブル径 の変動巾を小さくすることができる。 In addition, the width of the folded tubular film 3 to be cut is automatically detected by installing the diameter detectors 15 and 15 at the bottom of the pable, and the cutting knife 5 is moved to a position corresponding to this width. It can be automated as it can. Further, the fluctuation width of the bubble diameter can be reduced by linking the supplied compressed air amount with the stretchable bubble diameter detected by the bubble diameter detectors 15 and 15.
供給する圧空量はバブル径検出器 1 5、 1 5 ' で検出された延伸 バブル径に応じて自動的に供絵される。 パプル径検出器 1 5、 1 5 , は可視光線、 赤外線 'あるいはレーザーを照射して反射される各光 線を検出して反射する物体との距離を測定する測定センサーを利用 してパブルとの距離を測定するものである。 バプル径検出器 1 5、 1 5 ' は加熱ヒーター 2の下部あるいは加熱ヒーター 2にのぞき穴 を設けることによつて加熱ヒーター 2の中間段階でバブルまでの距 離を検出することができる。 出力コントローラー 2 5は 2個以上の 測距センサー (パブル径検出器 1 5、 1 5, ) から得られる測定距 離をもとにパブル径を算出し設定パプル径との差に応じて圧空供給 バルブ 2 6の開度を調節し、 設定パプル径と同一パプル径となるよ うにコントロールするものである。 The supplied compressed air amount is automatically provided according to the stretched bubble diameter detected by the bubble diameter detectors 15 and 15 '. The purple diameter detector 15, 15, 15, irradiates visible light, infrared light, or a laser, and detects each light beam reflected and measures the distance to the reflecting object by using a measurement sensor that measures the distance from the object. It measures distance. The bubble diameter detectors 15 and 15 ′ can detect the distance to the bubble at the intermediate stage of the heater 2 by providing an observation hole at the lower portion of the heater 2 or in the heater 2. The output controller 25 calculates the diameter of the bubble based on the measurement distance obtained from two or more distance measurement sensors (Pubble diameter detectors 15, 15,) and supplies compressed air according to the difference from the set purple diameter. The opening degree of the valve 26 is adjusted to control the same purple diameter as the set purple diameter.
圧空供給バルブ 2 6は出力コントローラー 2 5からの信号によつ てバルプ開度を変えブロワ一 2 7から供給される圧空の量を調節す る。 The compressed air supply valve 26 changes the valve opening degree according to a signal from the output controller 25 to adjust the amount of compressed air supplied from the blower 27.
更に切開部のすぐ上に別のバブル径検出器を設けて下部バブル径 を出力コントローラー 2 5に入力して上下のパプル径差あるいは切 開部での圧 洩れを考慮した圧空供給も可能である。
折畳ロール群 4は延伸バブルフイルム 3を折り畳み、 ニッブロー ル R 2へ導く役目を有し、 ガイ ドロール 8、 8, は切開かれたフラ ッ ト状フィルム 7、 7 ' をスリッ ト状圧空吹込ノズル 6及び切開ナ ィフ装置に接触することなくスムーズに引取ニッブロール: R 3に導 く役目を有する。 In addition, another bubble diameter detector is provided just above the incision, and the lower bubble diameter is input to the output controller 25 so that compressed air can be supplied in consideration of the difference between the upper and lower purple diameters or the leakage at the incision. . The folding roll group 4 has a function of folding the stretched bubble film 3 and guiding it to the nibble roll R2. 6 and take-off nibroll smoothly without contacting the cutting knife device: has the function of leading to R3.
未延伸フィルム 1は環状延伸バブルをリング状に取り囲むように 設置された加熱ヒーター 2により加熱され、 ノズル 6から吹き込ま れる圧空により膨張される。 The unstretched film 1 is heated by a heater 2 installed so as to surround the annular stretched bubble in a ring shape, and is expanded by compressed air blown from a nozzle 6.
更に、 主としてニッブロール R 1及び R 2の周速差で縱方向に延 伸する場合は結果として同時二軸延伸される。 勿論、 内圧をかける 際、 設定の径を未延伸環状フィルム 1 と同じ径とすることによって 縱ー軸延伸も可能である。 実施例 Furthermore, when the film is stretched in the longitudinal direction mainly due to the peripheral speed difference between the nib rolls R 1 and R 2, the film is simultaneously biaxially stretched. Of course, when the internal pressure is applied, longitudinal-axial stretching is also possible by setting the set diameter to be the same as that of the unstretched annular film 1. Example
以下、 本発明の装置及び延伸フィルムの製造方法の例を装 Sの説 明図 1一 7図を用いて具体的に説明するが本発明の趣旨から外れな い限り本実施例に限定されない。 Hereinafter, an example of the apparatus and the method for producing a stretched film of the present invention will be specifically described with reference to FIGS. 117 to 117 of the apparatus S. However, the present invention is not limited to the examples unless departing from the spirit of the present invention.
始動時は先ず線状低密度ポリエチレン(M I = 2 . 0 ) 中に微細に 分散した低分子ポリエチレンチレフタレート( I V = 0 . 2 5 ) を 3 5重量%含む未延伸管状フイルムをニッブロール R 1、 折畳ロール 群 4、 ニッブロール R 2に通し、 加熱膨張を始めていない未延伸管 状フィルム 1を、 互いに分離された回転軸 1 3及び 1 3, に連結し たモーター 1 1、 1 1 , をそれぞれ独立に運転して、 未延伸管状フ イルム 1の折畳巾に調節した切開用ナイフ 5、 5, によって切開い て、 2枚のフラッ ト状フィルム 7、 7, とし、 ガイ ドロール 8及び 8, を経てニッブロール R 3で引取った。 At the start-up, first, an unstretched tubular film containing 35% by weight of low-molecular-weight polyethylene thiophthalate (IV = 0.25) finely dispersed in linear low-density polyethylene (MI = 2.0) is nibroll R1, The unstretched tubular film 1 that has not started to heat and expand is passed through the folding roll group 4 and the nib roll R2, and the motors 11 and 11 connected to the rotating shafts 13 and 13 separated from each other. It is operated independently and is cut open by the cutting knives 5, 5, adjusted to the folding width of the unstretched tubular film 1, and made into two flat films 7, 7, and guide rolls 8, 7, 8, And with Nibroll R3.
次いで、 未延伸管状フィルム 1 を加熱ヒーター 2によって加熱し、 圧空吹込みノズル 6からチュ-プ 3内に圧空を供給してバプル 3を形 成し、 続いて上下に位置するニッブロール R 1及び R 2を駆動させ、 加熱ヒーター 2を調節し、 ニッブロール R 2に対するニッブロール
R 1の周速度比を 0 . 3 1 として緵倍率を . 2倍とし、 又、 圧空 量を調節して模倍率 2 . 5倍にして同時二軸延伸を行ない通気性二 軸延伸フィルム 3を製造した。 前記の調節により延伸されたフィル ム 3が折畳ロール群 4.により折畳まれてニッブロール R 2に到達し た時、 パブル 3の折巾は徐々に大きくなるが、 この時モーター 1 1、 1 1, を作動し切開用ナイフ 5の位置を徐々に左右に拡げることに よってスムーズに延伸及び切開を继続した。 Next, the unstretched tubular film 1 is heated by the heater 2, and compressed air is supplied from the compressed air blowing nozzle 6 into the tube 3 to form a bubble 3, and then the nibbles R 1 and R located above and below are formed. Drive 2 and adjust heating heater 2 and nib roll for nib roll R 2 The peripheral speed ratio of R1 is 0.31, the 緵 magnification is 0.2 times, and the compressed air volume is adjusted to 2.5 times the model magnification, and simultaneous biaxial stretching is performed to obtain a breathable biaxially stretched film 3. Manufactured. When the film 3 stretched by the above adjustment is folded by the folding roll group 4 and reaches the nib roll R2, the folding width of the pubble 3 gradually increases. By operating 1 and, the position of the incision knife 5 was gradually widened to the left and right, and the stretching and incision was continued smoothly.
この後、 供給する圧空量を調節して延伸フィルム 3の径がほぼ一 定と成るようにし、 ニッブロール R 2の位置で切開かれ 2枚の延伸 フラットフィルム 7、 7 ' をガイ ドロール 8、 8, を経て二ッブロ ール R 3で引き取った後、 各フラッ トフィルムを 2台のワインダー で別々に巻き取った。 得られた二軸延伸フイルム 3は通気性であり 平面性良好なフィルムであった。 Thereafter, the amount of compressed air to be supplied is adjusted so that the diameter of the stretched film 3 becomes substantially constant, and the stretched flat film 7, 7 'is cut open at the position of the nib roll R2 and the guide rolls 8, 8, 7 After the film was taken up by Nibroll R3, each flat film was separately wound up by two winders. The obtained biaxially stretched film 3 was a film having good air permeability and good flatness.
(実施例 2 ) . (Example 2).
実施例 1と同じ未延伸環状フィルム 1を実施例 1 と同様に通紙し て引き取った。 次いで未延伸環状フィルム 1を加熱ヒーター 2によ つて加熱し、 バブル検出器 1 5、 1 5, 、 主力コントローラー 2 5、 圧空供給バブル 2 6と切閲部の光電スィッチ及びリレーを作動させ た。 The same unstretched annular film 1 as in Example 1 was passed through in the same manner as in Example 1 and taken out. Next, the unstretched annular film 1 was heated by the heater 2, and the bubble detectors 15 and 15, the main controller 25, the compressed air supply bubble 26, and the photoelectric switch and relay of the censor were operated.
加熱ヒーター 2のスィツチを入れて約 1分後ニップロール R 1、 R 2 R 3の駆動モーターのスィッチを入れ延伸を開始した。 パプ ルが徐々に膨張すると共に圧空供給バルブ 2 6の開度は徐々に減少 し、 約 5分後設定パルプ径と同一になり安定した。 その間切開用ナ イブ 5、 5, はバブルの膨張と共に光電スィッチ及びリレーの作動 によって拡がりパプルの安定と共に光電スィッチの断続の作動頻度 も減少し安定した。 Approximately one minute after the switch of the heater 2 was inserted, the drive motors of the nip rolls R1, R2R3 were switched on to start stretching. As the pulp gradually expanded, the opening of the compressed air supply valve 26 gradually decreased, and after about 5 minutes, it became the same as the set pulp diameter and stabilized. In the meantime, the incision nibs 5, 5, and were expanded by the operation of the photoelectric switch and the relay together with the expansion of the bubble, and the purple became stable and the operation frequency of the intermittent operation of the photoelectric switch was reduced and stabilized.
ニッブロール R 2の位置にあるナイフ 5、 5 ' で切り開かれた延 伸フラッ トフィルム 7、 7, は実施例 1 と同様に引取りワインダー にて巻き取った。 The stretched flat films 7, 7, which were cut open by the knives 5, 5 'at the position of the nib roll R2, were wound by a take-up winder in the same manner as in Example 1.
得られた二軸延伸フィルム 3は通気性であったが自動圧空供給に
よりバブルは安定し、 切り開いて巻取ったフラッ トフィルムは一定 巾の平面性良好なフイルムであった。 産業上の利用可能性 The obtained biaxially stretched film 3 was air permeable, but The bubbles were more stable, and the flat film that was cut open and wound was a film with a certain width and good flatness. Industrial applicability
本発明のチューブ状延伸フィルムの製造装置はニッブロール R 2 のギヤッブ間に設けられたスリッ ト状圧空吹き出し装置のノズルか ら延伸継続中も圧空を供給することが出来るため、 経時的に漏洩す るバブル内の圧空を延伸を停止しないで補充することが出来るため、 長時間一定延伸倍率による延伸を継続できる。 更に、 通気性な環状 未延伸フィルム又は延伸により通気性になる未延伸フィルムを延伸 して多孔質フィルムを製造する場合でも通気により漏洩する内部空 気に相当する空気量を圧空により供給することによりバブル径を常 に一定に保つことができ、 長時間安定して通気性延伸フィルムを製 造することが出来る。
The apparatus for producing a tubular stretched film of the present invention can supply compressed air from the nozzle of the slit-shaped compressed air blowing device provided between the gears of the nib roll R 2 even while the stretching is being performed, and thus leaks over time. Since the compressed air in the bubble can be replenished without stopping the stretching, the stretching at a constant stretching ratio can be continued for a long time. Furthermore, even when a porous film is produced by stretching a gas-permeable unstretched annular film or a non-stretched film that becomes gas-permeable by stretching, the air amount corresponding to the internal air leaking by ventilation is supplied by compressed air. The bubble diameter can always be kept constant, and a breathable stretched film can be manufactured stably for a long time.
Claims
1 . 管状熱可塑性樹脂フィルムを周速度が異なるニッブロール間 に通し、 加熱下に内圧により膨張して延伸フィルムを製造する方法 に於いて、 該ニッブロールは少なくとも R 1、 R 2及び R 3の 3組 のニッブロールからなり、 各々の周速度を r 1、 r 2および r 3と した時、 r 1 / r 2 r 3の比を 0 · 1— 0 . 8 / 1 Z 1— 1 . 1 とレ、 但し 1. In a method of producing a stretched film by passing a tubular thermoplastic resin film between nib rolls having different peripheral speeds and expanding by heating under internal pressure to produce a stretched film, the nib roll has at least three sets of R1, R2 and R3. When the peripheral velocities are r1, r2 and r3, the ratio of r1 / r2r3 is 0 · 1—0.8 / 1Z1–1.1, and However
R 1は管状未延伸フィルム導入側ニッブロール R 1 is the nibroll on the introduction side of the tubular unstretched film
R 2は管状延伸後の折畳み終了部のニッブロール R 2 is the nibroll at the end of folding after tubular stretching
R 3は折畳み終了部に続く引取ニッブロール R 3 is a take-off nibroll following the end of folding
であり、 R 2の一対のロール間のギャップ間に設けられたスリッ ト 状圧空吹出ソズルから R 1と R 2の間の延伸部パプル内に圧空を吹 き出して供給される圧空によって生じるパブルを加熱下に少なくと も円周方向に 1倍以上に膨張延伸させた後、 折畳装置により折畳ま れニップロール R 2に導かれ、 折り畳まれたフィルムの両端をニッ ブロール間に設けられたフィルム切開用ナイフによって 2枚のフラ ットフイルムに切開き、 それぞれのフラットフィルムを左右のガイ ドロールに導いて、 前記のスリツ ト状吹出ノズル及び切開用ナイフ 装置を回避させた後ニッブロール R 3によ 引取ることを特徴とす る延伸フィルムの製造方法。 A bubble generated by compressed air supplied by blowing compressed air from the slit-shaped compressed air blowing sootles provided between the pair of rolls of R2 into the extending portion purple between R1 and R2. Was expanded and stretched at least one time in the circumferential direction under heating, then folded by a folding device, guided to a nip roll R2, and both ends of the folded film were provided between the nip rolls. Cut two flat films with a film cutting knife, guide each flat film to the right and left guide rolls, bypass the slit-shaped blowing nozzle and cutting knife device, and then pull with a nib roll R3. A method for producing a stretched film.
2 . 管状熱可塑性樹脂フィルムが通気性フィルム又は延伸により 通気性となるフィルムであることを特徴とする特許請求の範囲第 1 項の延伸フイルムの製造方法。 2. The method for producing a stretched film according to claim 1, wherein the tubular thermoplastic resin film is a breathable film or a film which becomes breathable by stretching.
3 . 管状熱可塑性樹脂フィルムを異なるニッブロール間に通し、 加熱下に内圧により膨張して延伸フィルムを製造する装置 ίこおいて、 該.ニッブロールは少なくとも R 1、 R 2及び R 3の 3組の二ッブロ ールから成り、 それぞれの周速度を r 1、 r 2及び r 3とした時、 r 1 Z r 2 / r 3の比を 0 . 1— 0 . 8 / 1 / 1— 1 . 1となるよ うに調節が可能であり、 但し
R 1 は管状未延伸フィルム導入側ニッブロール 3. An apparatus for passing a tubular thermoplastic resin film between different nib rolls and expanding by heating under an internal pressure to produce a stretched film. The nib roll has at least three sets of R1, R2 and R3. When the peripheral velocities are r1, r2 and r3, the ratio of r1Zr2 / r3 is 0.1-0.8 / 1 / 1-1-1.1. Can be adjusted so that R 1 is the nibroll on the introduction side of the tubular unstretched film
R 2は管状延伸後の折畳み終了部のニッブロール R 2 is the nibroll at the end of folding after tubular stretching
R 3は折畳み終了部に続く引取ニッブロール R 3 is a take-off nibroll following the end of folding
であり、 R 1 と R 2の間に導入された管状フィルムを加熱する加熱 装置及び延伸された管状フィルムを折畳む装置を具備し、 二.ッブロ ール R 2の一対のロール間のギャップは調節が可能であり、 そのギ ャッブ間にはバプル内に向かって圧空を吹き出すスリッ ト状圧空吹 出ノズル装置及び折り畳んだフィルムの両端を切り閲くために R 2 ニッブロールの長さ方向に移動可能な左右に 2本のフィルム両端切 閲用ナイフ装置が設けられ、 R 2と R 3の間に、 切開かれた 2枚の フラッ トフイルムが前記のスリツ ト状吹出ノズル装置及び切開用ナ ィフ裝置を回避させ得る位置に各フラッ トフィルム通路每にそれぞ れ 1 または 2以上のガイ ドロールを具備することを特徴とする延伸 フィルムの製造装置。 A heating device for heating the tubular film introduced between R1 and R2, and a device for folding the stretched tubular film, and the gap between the pair of rolls of 2. Adjustable, between the gaps can be moved in the longitudinal direction of the R2 nibroll to cut both ends of the folded film and a slit-shaped compressed air blowing nozzle device that blows compressed air into the bubble In addition, two knife devices for cutting both ends of the film are provided on the left and right, and between R2 and R3, the two flat films that are cut open are the slit-shaped blowing nozzle device and the knife device for cutting. An apparatus for producing a stretched film, comprising one or more guide rolls in each of the flat film passages (2) at a position where the film roll can be avoided.
4 . フィルム切開用ナイフ装蘆がスリッ ト状圧空吹出装置のギヤ ッブ内に設けられていることを特徵とするクレーム 3の製造装置。 4. A manufacturing device for claim 3, characterized in that a film cutting knife device is provided in a gear of a slit-shaped compressed air blowing device.
5 . フィルム切開用ナイフ装置がスリッ ト状圧空吹出装置の位置 に対してエップロールの両端側に設けられていることを特徴とする ク レーム 3の製造装置。 5. A manufacturing apparatus for claim 3, wherein a knife device for cutting a film is provided on both ends of the Ep-roll with respect to a position of the slit-shaped compressed air blowing device.
6 . スリッ ト状圧空吹出ノズルから吹き出される圧空の量及び圧 をバブル径を検知し、 その変動に応じてそれを解消するように自動 的に変量し得る自動コントロール装蘆を具備していることを特徴と するクレーム 3の製造装置。
6. Equipped with an automatic control device that can detect the bubble diameter of the amount and pressure of the compressed air blown out from the slit-shaped compressed air blowing nozzle and automatically change the pressure to eliminate it according to the fluctuation. Claim 3 characterized by the following.
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT88909833T ATE96728T1 (en) | 1987-11-12 | 1988-11-12 | DEVICE AND METHOD FOR MAKING STRETCHED FILMS. |
DE88909833T DE3885469T2 (en) | 1987-11-12 | 1988-11-12 | DEVICE AND METHOD FOR PRODUCING STRETCHED FILMS. |
KR1019890701302A KR960015306B1 (en) | 1987-11-12 | 1988-11-12 | Method and apparatus for producing stretched film |
MX014903A MX169882B (en) | 1987-11-12 | 1988-11-12 | PROCESS FOR PREPARING STRETCHED FILM AND DEVICE FOR PREPARING THE FILM |
CA000589437A CA1320320C (en) | 1988-11-12 | 1989-01-27 | Process for preparing stretched film and device for preparing the film |
ZA89748A ZA89748B (en) | 1988-11-12 | 1989-01-31 | Process for preparing stretched film and device for preparing the film |
ES898900586A ES2012664A6 (en) | 1988-11-12 | 1989-02-17 | Process and device for preparing elongated films |
DK339589A DK339589D0 (en) | 1987-11-12 | 1989-07-07 | METHOD AND APPARATUS FOR PREPARING A STRAIGHT FILM |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP28419187 | 1987-11-12 | ||
JP62/284191 | 1987-11-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1989004244A1 true WO1989004244A1 (en) | 1989-05-18 |
Family
ID=17675351
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1988/001143 WO1989004244A1 (en) | 1987-11-12 | 1988-11-12 | Method and apparatus for producing stretched film |
Country Status (7)
Country | Link |
---|---|
US (1) | US4983337A (en) |
EP (1) | EP0399042B1 (en) |
KR (1) | KR960015306B1 (en) |
AU (1) | AU615694B2 (en) |
DE (1) | DE3885469T2 (en) |
MX (1) | MX169882B (en) |
WO (1) | WO1989004244A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5352108A (en) * | 1991-10-18 | 1994-10-04 | Norito Sudo | Porous film and porous film manufacturing apparatus |
CN116252463A (en) * | 2023-05-15 | 2023-06-13 | 龙华相位新材料(绵阳)股份有限公司 | Film stretch forming device and forming method |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5158637A (en) * | 1989-09-20 | 1992-10-27 | Idemitsu Petrochemical Co., Ltd. | Method of and an apparatus for thermally processing crystalline thermoplastic resin film |
CA2077941C (en) * | 1992-07-07 | 2000-06-20 | John Louis Varadi | Automatic bubble blower for orientation film lines |
US7837978B2 (en) * | 2006-10-13 | 2010-11-23 | Chevron U.S.A. Inc. | Process for preparing aluminum-containing molecular sieve SSZ-26 |
US20080206381A1 (en) * | 2007-02-23 | 2008-08-28 | Nexcel Synthetics, Llc | Methods and systems for manufacturing yarns for synthetic turf |
CN111497204B (en) * | 2020-05-03 | 2021-12-03 | 巢湖市劲邦塑料包装有限公司 | Prevent electrostatic interference's high-efficient automatic blown film device |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56129138A (en) * | 1980-03-14 | 1981-10-09 | Nippon Synthetic Chem Ind Co Ltd:The | Method and device for manufacturing tubular method biaxially oriented film |
JPS62191121A (en) * | 1986-02-18 | 1987-08-21 | Mitsubishi Chem Ind Ltd | Manufacture of tubular biaxially stretched film |
JPS63120632A (en) * | 1986-11-11 | 1988-05-25 | Mitsubishi Kasei Corp | Production equipment for porous biaxially stretched film |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1133536B (en) * | 1957-08-17 | 1962-07-19 | Hans Widmaier | Device for the production of tapes, foils or similar flat structures made of stretchable plastic |
FR1282813A (en) * | 1960-02-08 | 1962-01-27 | Ici Ltd | Film manufacturing process |
US3291876A (en) * | 1964-05-05 | 1966-12-13 | Beloit Corp | Method and mechanism for biaxially orienting extruded tubular film |
JPS5210155A (en) * | 1975-07-15 | 1977-01-26 | Nec Corp | Production method for multiple exposure hologram |
JPS5213562A (en) * | 1975-07-24 | 1977-02-01 | Denki Kagaku Kogyo Kk | Process for producing foamed synthetic resin sheet |
US4138453A (en) * | 1977-05-17 | 1979-02-06 | Exxon Research & Engineering Co. | Process for manufacturing blown film sheeting |
JPS598340B2 (en) * | 1978-04-24 | 1984-02-24 | 旭化成株式会社 | Thermoplastic resin stretching air injection method and device |
US4270891A (en) * | 1979-08-16 | 1981-06-02 | Hopper Stephen M | Take-off apparatus for formed tubular plastic film |
GB2145027B (en) * | 1983-08-19 | 1986-10-08 | Metal Box Plc | Tubular articles of biaxially oriented polymers |
JPS60215034A (en) * | 1984-04-10 | 1985-10-28 | Mitsubishi Chem Ind Ltd | Porous film or sheet rendered hydrophilic |
DE3520914C1 (en) * | 1985-06-11 | 1986-11-27 | Windmöller & Hölscher, 4540 Lengerich | Flat lay and take-off device for a film web made of plastic by the blowing process from a stationary arranged film blowing head |
JPS6471727A (en) * | 1987-09-11 | 1989-03-16 | Idemitsu Petrochemical Co | Method and device for tubular orientation of thermoplastic resin |
AU610366B2 (en) * | 1988-03-31 | 1991-05-16 | Idemitsu Petrochemical Co., Ltd. | Method of and apparatus for manufacturing biaxially oriented film |
JPH0694092B2 (en) * | 1989-05-29 | 1994-11-24 | ローム株式会社 | Hoop frame transport and positioning mechanism |
-
1988
- 1988-11-12 DE DE88909833T patent/DE3885469T2/en not_active Expired - Fee Related
- 1988-11-12 EP EP88909833A patent/EP0399042B1/en not_active Expired - Lifetime
- 1988-11-12 US US07/381,713 patent/US4983337A/en not_active Expired - Fee Related
- 1988-11-12 WO PCT/JP1988/001143 patent/WO1989004244A1/en active IP Right Grant
- 1988-11-12 AU AU26225/88A patent/AU615694B2/en not_active Ceased
- 1988-11-12 KR KR1019890701302A patent/KR960015306B1/en not_active IP Right Cessation
- 1988-11-12 MX MX014903A patent/MX169882B/en unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56129138A (en) * | 1980-03-14 | 1981-10-09 | Nippon Synthetic Chem Ind Co Ltd:The | Method and device for manufacturing tubular method biaxially oriented film |
JPS62191121A (en) * | 1986-02-18 | 1987-08-21 | Mitsubishi Chem Ind Ltd | Manufacture of tubular biaxially stretched film |
JPS63120632A (en) * | 1986-11-11 | 1988-05-25 | Mitsubishi Kasei Corp | Production equipment for porous biaxially stretched film |
Non-Patent Citations (1)
Title |
---|
See also references of EP0399042A4 * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5352108A (en) * | 1991-10-18 | 1994-10-04 | Norito Sudo | Porous film and porous film manufacturing apparatus |
CN116252463A (en) * | 2023-05-15 | 2023-06-13 | 龙华相位新材料(绵阳)股份有限公司 | Film stretch forming device and forming method |
CN116252463B (en) * | 2023-05-15 | 2023-08-01 | 龙华相位新材料(绵阳)股份有限公司 | Film stretch forming device and forming method |
Also Published As
Publication number | Publication date |
---|---|
AU615694B2 (en) | 1991-10-10 |
DE3885469D1 (en) | 1993-12-09 |
DE3885469T2 (en) | 1994-04-21 |
KR960015306B1 (en) | 1996-11-07 |
EP0399042B1 (en) | 1993-11-03 |
US4983337A (en) | 1991-01-08 |
EP0399042A4 (en) | 1990-08-07 |
EP0399042A1 (en) | 1990-11-28 |
MX169882B (en) | 1993-07-29 |
AU2622588A (en) | 1989-06-01 |
KR890701335A (en) | 1989-12-20 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US5248366A (en) | Method for helical cutting of a flexible tubular sheet of polymeric material | |
US2862234A (en) | Apparatus for introducing fluid pressure into continuously advancing tubular film | |
US5128076A (en) | Apparatus and method for producing an elongate strip of material | |
US5361469A (en) | Apparatus for helical cutting of a flexible tubular sheet of polymeric material | |
WO1989004244A1 (en) | Method and apparatus for producing stretched film | |
US7392960B2 (en) | Method for unwinding rolls of web material | |
WO2007029386A1 (en) | Device and method for cutting and winding tubular resin film | |
US7028940B2 (en) | Apparatus for unwinding rolls of web material | |
JP2576895B2 (en) | Method and apparatus for producing stretched film | |
US3814785A (en) | Heat stabilization of oriented thermoplastic films | |
US2916764A (en) | Apparatus including tube flattening rollers for inflating tubular film | |
US5124094A (en) | Apparatus and method for constraining a rotating tube of material | |
CA1320320C (en) | Process for preparing stretched film and device for preparing the film | |
US3801036A (en) | Production of thermoplastic films | |
US3907186A (en) | Film-spreader | |
WO1989006594A1 (en) | A method and an apparatus for producing a thinned plastics film and a reel of such a film | |
CN114211730B (en) | Blow molding method of degradable plastic film | |
JP4421239B2 (en) | Inflation film manufacturing method | |
JP3788658B2 (en) | Thermoplastic film production system | |
JPS63120632A (en) | Production equipment for porous biaxially stretched film | |
JP2000309053A (en) | Blown film web heating apparatus | |
WO1992016350A1 (en) | Apparatus for transporting an open tube of material | |
JPS61272129A (en) | Take-up unit for inflated tubular film | |
US20060113421A1 (en) | Method and apparatus for forming a roll of material | |
JPS5843254B2 (en) | Biaxially stretched film manufacturing method and equipment |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AU DK JP KR US |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): AT BE CH DE FR GB IT LU NL SE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1988909833 Country of ref document: EP |
|
WWP | Wipo information: published in national office |
Ref document number: 1988909833 Country of ref document: EP |
|
WWG | Wipo information: grant in national office |
Ref document number: 1988909833 Country of ref document: EP |